Hi Sergio, in the block join, under the hood, nested docs are separate Lucene(Solr documents). Assuming you are retrieving parents after querying children ( https://solr.apache.org/guide/solr/latest/query-guide/block-join-query-parser.html#block-join-parent-query-parser) that's all you got for reranking. So you can't calculate features on children (which are anyway separate docs). It could be a nice contribution though, if you want to work on this, ahppy to review!
Cheers -------------------------- *Alessandro Benedetti* Director @ Sease Ltd. *Apache Lucene/Solr Committer* *Apache Solr PMC Member* e-mail: a.benede...@sease.io *Sease* - Information Retrieval Applied Consulting | Training | Open Source Website: Sease.io <http://sease.io/> LinkedIn <https://linkedin.com/company/sease-ltd> | Twitter <https://twitter.com/seaseltd> | Youtube <https://www.youtube.com/channel/UCDx86ZKLYNpI3gzMercM7BQ> | Github <https://github.com/seaseltd> On Mon, 24 Jul 2023 at 12:23, Sergio García Maroto <marot...@gmail.com> wrote: > Hi, > > I am trying to set up a list of features within LTR. > I have a collection *"person" *with a design of two levels. I have Person > documents with nested documetns classified as jobs. > > Within the job level I have two fields describing if the job is current and > recency. I would like to incorporante these two as features. > Sample of two documents, one for a person an another one for a job. > { "PersonID":220444495, "NameFullD":"Peter Peter", "_root_":"220444495", " > type_level":"parent"}, { > { "type_level":"job", "_root_":"220444495"}, > "IsCurrent":"true"}, > "*JobEndDate*":"2021-05-30"}, > { > > My query runs as a blockjoin query targeting child document job and returns > people as parent documetns. > q="({!type=parent which=type_level:parent v='((CompanyNameNSD:ibm) AND > (type_level:(job)))' score=total} AND type_level:(parent)))" > > My question is related to features when related to nested documetns. Is it > posible to get the feaure value back. > I tried this way but seems to work only when the query onlt targets > children documents and gets back chikdren When I introduce {!type=parent > which=type_level:parent > then doesn't work. I get back > > isCurrentJob=0.0,originalScore=1.7668228" > > > Feature store sample > [ > { > "store" : "personFeatureStore", > "name" : "isCurrentJob", > "class" : "org.apache.solr.ltr.feature.SolrFeature", > "params" : { > "fq": ["{!terms f=PrimaryNS}true"] > } > }, > { > "store" : "personFeatureStore", > "name" : "originalScore", > "class" : "org.apache.solr.ltr.feature.OriginalScoreFeature", > "params" : {} > } > ] > > > Regards, > Sergio Maroto >
